Interface-driven conductance transition in nanostructured polymer networks

被引：5

作者：

Adetunji, O. O. ^{[1
]}

Chiou, N-R. ^{[2
]}

Epstein, A. J. ^{[1
,2
]}

机构：

[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[2] Ohio State Univ, Dept Chem, Columbus, OH 43210 USA

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 01期

关键词：

electrical conductivity; interface states; nanofibres; nanostructured materials; polymer fibres; polymer structure; reflectivity; X-ray diffraction; METAL-INSULATOR BOUNDARY; POLYANILINE NANOFIBERS; TRANSPORT-PROPERTIES; SULFONIC-ACID; CONDUCTIVITY; REFLECTANCE; GROWTH; STATE;

D O I：

10.1103/PhysRevB.80.012201

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

We report an anomalous electronic transport signature in polyaniline nanofiber networks probed via the temperature-dependent dc conductivity [sigma(dc)(T)], reflectance [R(omega,T)] over a broad frequency range (300-50 000 cm(-1)), and x-ray diffraction. We determined that disorder and localization dominate the bulk charge dynamics and propose that the origin of the atypical electronic transport signature in the nanofibers networks is the "fragile" nature of the conductance at the nanofiber interfaces resulting from the strong T-dependent localization of electronic states in the nanostructure interface regions.

引用

页数：4

共 28 条

[1]

Comparison of electronic transport properties of soluble polypyrrole and soluble polyaniline doped with dodecylbenzene-sulfonic acid [J].